Extending the framework – laravel – the php framework for web artisans

Laravel has several Manager classes that manage the creation of driver-based components. Php classes for mysql queries These include the cache, session, authentication, and queue components. Php institute in pune The manager class is responsible for creating a particular driver implementation based on the application’s configuration.

Working with classes in php For example, the CacheManager class can create APC, Memcached, File, and various other implementations of cache drivers.

Each of these managers includes an extend method which may be used to easily inject new driver resolution functionality into the manager. Php list all classes We’ll cover each of these managers below, with examples of how to inject custom driver support into each of them.

Note: Take a moment to explore the various Manager classes that ship with Laravel, such as the CacheManager and SessionManager. Php classes pune Reading through these classes will give you a more thorough understanding of how Laravel works under the hood. Classes em php All manager classes extend the Illuminate\Support\Manager base class, which provides some helpful, common functionality for each manager.

To extend the Laravel cache facility, we will use the extend method on the CacheManager, which is used to bind a custom driver resolver to the manager, and is common across all manager classes. Php using classes For example, to register a new cache driver named “mongo”, we would do the following: Cache::extend(‘mongo’, function($app)

The first argument passed to the extend method is the name of the driver. Php objects and classes This will correspond to your driver option in the config/cache.php configuration file. Php coaching classes in pune The second argument is a Closure that should return an Illuminate\Cache\Repository instance. Php classes in mumbai The Closure will be passed an $app instance, which is an instance of Illuminate\Foundation\Application and a service container.

The call to Cache::extend could be done in the boot method of the default App\Providers\AppServiceProvider that ships with fresh Laravel applications, or you may create your own service provider to house the extension – just don’t forget to register the provider in the config/app.php provider array.

To create our custom cache driver, we first need to implement the Illuminate\Contracts\Cache\Store contract. How to use class in php w3schools So, our MongoDB cache implementation would look something like this: class MongoStore implements Illuminate\Contracts\Cache\Store {

We just need to implement each of these methods using a MongoDB connection. Php functions and classes Once our implementation is complete, we can finish our custom driver registration: Cache::extend(‘mongo’, function($app)

If you’re wondering where to put your custom cache driver code, consider making it available on Packagist! Or, you could create an Extensions namespace within your app directory. Php programming classes online However, keep in mind that Laravel does not have a rigid application structure and you are free to organize your application according to your preferences.

Extending Laravel with a custom session driver is just as easy as extending the cache system. Online php classes free Again, we will use the extend method to register our custom code: Session::extend(‘mongo’, function($app)

Note that our custom session driver should implement the SessionHandlerInterface. Php online classes for free This interface contains just a few simple methods we need to implement. Php classes mumbai A stubbed MongoDB implementation would look something like this: class MongoHandler implements SessionHandlerInterface {

• The open method would typically be used in file based session store systems. Php online training hyderabad Since Laravel ships with a file session driver, you will almost never need to put anything in this method. Php classes in hyderabad ameerpet You can leave it as an empty stub. Classes php 5 It is simply a fact of poor interface design (which we’ll discuss later) that PHP requires us to implement this method.

• The read method should return the string version of the session data associated with the given $sessionId. Php extending classes There is no need to do any serialization or other encoding when retrieving or storing session data in your driver, as Laravel will perform the serialization for you.

• The gc method should destroy all session data that is older than the given $lifetime, which is a UNIX timestamp. Classes and objects php For self-expiring systems like Memcached and Redis, this method may be left empty.

Authentication may be extended the same way as the cache and session facilities. Php useful classes Again, we will use the extend method we have become familiar with: Auth::extend(‘riak’, function($app)

The UserProvider implementations are only responsible for fetching a Illuminate\Contracts\Auth\Authenticatable implementation out of a persistent storage system, such as MySQL, Riak, etc. Php classes repository These two interfaces allow the Laravel authentication mechanisms to continue functioning regardless of how the user data is stored or what type of class is used to represent it.

The retrieveById function typically receives a numeric key representing the user, such as an auto-incrementing ID from a MySQL database. Array of classes php The Authenticatable implementation matching the ID should be retrieved and returned by the method.

The retrieveByToken function retrieves a user by their unique $identifier and “remember me” $token, stored in a field remember_token. What are php classes As with the previous method, the Authenticatable implementation should be returned.

The updateRememberToken method updates the $user field remember_token with the new $token. Php classes in baroda The new token can be either a fresh token, assigned on successful “remember me” login attempt, or a null when user is logged out.

The retrieveByCredentials method receives the array of credentials passed to the Auth::attempt method when attempting to sign into an application. Learn php classes and objects The method should then “query” the underlying persistent storage for the user matching those credentials. Classes for php in mumbai Typically, this method will run a query with a “where” condition on $credentials[‘username’]. Using classes in php The method should then return an implementation of UserInterface. Php classes in nagpur This method should not attempt to do any password validation or authentication.

The validateCredentials method should compare the given $user with the $credentials to authenticate the user. Php classes in indore For example, this method might compare the $user->getAuthPassword() string to a Hash::make of $credentials[‘password’]. Online php classes This method should only validate the user’s credentials and return boolean.

Now that we have explored each of the methods on the UserProvider, let’s take a look at the Authenticatable. Useful php classes Remember, the provider should return implementations of this interface from the retrieveById and retrieveByCredentials methods: interface Authenticatable {

This interface is simple. Php classes for dummies The getAuthIdentifier method should return the “primary key” of the user. How to use php classes and objects In a MySQL back-end, again, this would be the auto-incrementing primary key. Php tutorial classes and objects The getAuthPassword should return the user’s hashed password. Php working with classes This interface allows the authentication system to work with any User class, regardless of what ORM or storage abstraction layer you are using. Php classes for beginners By default, Laravel includes a User class in the app directory which implements this interface, so you may consult this class for an implementation example.

Almost every service provider included with the Laravel framework binds objects into the service container. Best php classes in pune You can find a list of your application’s service providers in the config/app.php configuration file. Free php classes As you have time, you should skim through each of these provider’s source code. Php classes in navi mumbai By doing so, you will gain a much better understanding of what each provider adds to the framework, as well as what keys are used to bind various services into the service container.

For example, the HashServiceProvider binds a hash key into the service container, which resolves into a Illuminate\Hashing\BcryptHasher instance. Php classes san diego You can easily extend and override this class within your own application by overriding this binding. Best php classes in mumbai For example:

Note that this class extends the HashServiceProvider, not the default ServiceProvider base class. Php coaching classes in mumbai Once you have extended the service provider, swap out the HashServiceProvider in your config/app.php configuration file with the name of your extended provider.

This is the general method of extending any core class that is bound in the container. Php classes xml Essentially every core class is bound in the container in this fashion, and can be overridden. Classes php Again, reading through the included framework service providers will familiarize you with where various classes are bound into the container, and what keys they are bound by. Online php training with live project This is a great way to learn more about how Laravel is put together.

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